(2)For the purpose of sub-rule (1),-(a)"account holder" means the person listed or identified as the holder of a financial account by the financial institution that maintains the account:Provided that a person, other than a financial institution, holding a financial account for the benefit or on account of another person as agent, custodian, nominee, signatory, investment advisor, or intermediary, is not treated as holding the account, and such other person is treated as holding the account:Provided further that in the case of a cash value insurance contract or an annuity contract, the account holder is any person entitled to receive a payment upon the maturity of the contract or any person entitled to access the cash value or change the beneficiary of the contract and if no person can access the cash value or change the beneficiary, the account holder is any person named as the owner in the contract and any person with a vested entitlement to payment under the terms of the contract;(b)"taxpayer identification number" means a number assigned to a person in the country or territory in which he is resident for tax purposes and includes a functional equivalent in case no such number is assigned.